87270637 has 4 divisors (see below), whose sum is σ = 87290236. Its totient is φ = 87251040.

The previous prime is 87270613. The next prime is 87270661. The reversal of 87270637 is 73607278.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (87270613) and next prime (87270661).

It can be written as a sum of positive squares in 2 ways, for example, as 58690921 + 28579716 = 7661^2 + 5346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87270637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87270637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87270137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463 + ... + 13219.

It is an arithmetic number, because the mean of its divisors is an integer number (21822559).

Almost surely, 2^87270637 is an apocalyptic number.

It is an amenable number.

87270637 is a deficient number, since it is larger than the sum of its proper divisors (19599).

87270637 is a wasteful number, since it uses less digits than its factorization.

87270637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19598.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 87270637 is about 9341.8754541045. The cubic root of 87270637 is about 443.5637522443.

The spelling of 87270637 in words is "eighty-seven million, two hundred seventy thousand, six hundred thirty-seven".